Over that last decade, Berthiez has successfully equipped a large number of vertical grinding machines with these drives. The result is that the disruptive influences of a mechanical drive on the surfaces are no longer a problem during precision grinding.

In 2012, the first Berthiez TVU 2000/160 vertical lathes featuring a torque motor drive delivering up to 10,000 Nm and 350 rpm were sold. Further orders for this innovative concept followed continuously in 2014. With its high stall torque and feed torque, the torque motor combines and fulfils the functions of turning, milling and positioning on its own.

This greatly simplifies the drive train concept, as the number of components and mechanical assemblies is significantly reduced, which in turn leads to increased reliability and benefits with regard to maintenance.